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Colour and colour change testing
Visual assessment of color change made using the gray scale
This test (along with the photometric method) can be used to assess the product's resistance to weather conditions.
The assessment is made by comparing the color change of the tested working sample with the unexposed sample using a gray scale.
The gray scale for assessing color change is used in a 5-grade range (basic scale) and in a 9-grade range, corresponding to half-grade color fastness indicators.
Standards
- PN-EN 20105-A02
- ISO 105-A02
In the photo: Byko-spectra chamber (BYK) for visual assessment using a gray scale
We perform colour and colour change measurements using spectrophotometers. Measurements are made at standard measurement geometries: 45/0, d / 8, d / 0 for various types of reflecting, transmitting and light-scattering materials, as well as fluorescent materials.
Testing range
- material colour measurements (results in the form of coordinates: xy, CIEXYZ, CIELAB, CIELUV, etc.),
- change in colour following aging and light resistance tests
- spectral reflection coefficient, transmission of light,
- spectral plots (spectral reflection coefficients, transmission),
- measurements of wide-angle spread (haze).
Devices
- X-Rite Color i5 spectrophotometer
- X-Rite CF57/CA spectrophotometer
- BYK-mac i spectrophotometer
X-Rite Color i5 spectrophotometer
X-Rite CF57/CA spectrophotometer
BYK-mac i spectrophotometer
Test norms
- PN-EN ISO 105-A05
- PN-EN ISO 105-J01
- PN-EN ISO 105-J03
- PN-ISO 7724-1
- PN-ISO 7724-2
- PN-ISO 7724-3
- CIE 15:2004
- CIE 015:2018
- DIN 53236
- SAE J1545
- PN-EN ISO 11664-1
- PN-EN ISO 11664-2
- PN-EN ISO 11664-3:
- PN-EN ISO 11664-4
- PN-EN ISO 11664-5:
- PN-EN ISO 11664-6
- VW 50195
- PN-EN ISO 20471
- PN-EN 1150
- PN-EN 13356
- PN-EN 12899
- UNECE Regulation Nos.: 27, 69, 70
- ASTM D1003
| Document No. | Title/Description |
|---|---|
| ISO 105-A02 | Textiles - Tests for colour fastness - Part A02: Grey scale for assessing change in colour |
| CIE 15 | Colorimetry, 3rd Edition |
| CIE 015 | Colorimetry, 4th Edition |
| PN-EN 12899-1 | Fixed, vertical road traffic signs - Part 1: Fixed signs |
| ASTM D1003 | Standard Test Method for Haze and Luminous Transmittance of Transparent Plastics |
| PN-EN 12899-3 | Fixed, vertical road traffic signs - Part 3: Delineator posts and retroreflectors |
| PN-EN ISO 20471 | |
| PN-EN 1150 | |
| PN-EN 13356 | |
| PN-EN ISO 105-A05 | |
| PN-EN ISO 105-J01 | |
| PN-EN ISO 105-J03 | |
| PN-ISO 7724-1 | |
| PN-ISO 7724-2 | |
| PN-ISO 7724-3 | |
| DIN 53236 | Colouring materials - Conditions of measurement and evaluation for the determination of colour differences for paint coatings, similar coatings and plastics |
| SAE J 1545 | Instrumental Color Difference Measurement for Exterior Finishes, Textiles and Colored Trim |
| PN-EN ISO 11664-1 | |
| PN-EN ISO 11664-2 | |
| PN-EN ISO 11664-3 | |
| PN-EN ISO 11664-4 | |
| PN-EN ISO 11664-5 | |
| PN-EN ISO 11664-6 | |
| VW 50195 | Colorimetric Evaluation of Automobile Paint Coatings |
| PN-EN 20105-A02 | Textiles - Tests for colour fastness - Part A02: Grey scale for assessing change in colour |
| Regulamin nr 27 EKG ONZ / UNECE Regulation No. 27 / Regelung Nr. 27 UN/ECE | Uniform provisions concerning the approval of advance warning triangles |
| Regulamin nr 69 EKG ONZ / UNECE Regulation No. 69 / Regelung Nr. 69 UN/ECE | UNIFORM PROVISIONS CONCERNING THE APPROVAL OF REAR MARKING PLATES FOR SLOW-MOVING VEHICLES (BY CONSTRUCTION) AND THEIR TRAILERS |
| Regulamin nr 70 EKG ONZ / UNECE Regulation No. 70 / Regelung Nr. 70 UN/ECE | UNIFORM PROVISIONS CONCERNING THE APPROVAL OF REAR MARKING PLATES FOR HEAVY AND LONG VEHICLES |
